changes so  that capacity station buffer can wait for the project to be assembled before work proceeds. Not tested yet

change so that in normal dist a max can be calculated (if not given) even if the mean and stdev are given as strings

We'll make the time unit a general parameter

The same WIP was set in all buffers

gantt duration are by hour, but this project is by day

Leaving method empty produces same result

CapacityStationBuffer sorting the entities that should move first and canDispose returns false if no entity should move